| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| Trying to find a planet closer to the Sun than Mercury, Samuel Schwabe discovered a cycle of these solar phenomena | sunspots | $400 | J | SCIENTIFIC DISCOVERIES | 2021-01-13 | #8313 | |
| Observed for centuries, they seem to have an 11-year cycle & are seats of magnetic fields | sunspots DD | $1,200 | DJ | SCIENTIFIC CYCLES | 1994-06-02 | #2259 | |
| 1st U.S. woman astronomer, M. Mitchell, found these solar phenomena are whirling cavities, not clouds | Sunspots | $600 | DJ | SCIENTISTS | 1990-05-15 | #1327 |